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—Look at the sign!
—Oh, I see.We _______ waste water.
A.can
B.must
C.mustn’t
D.needn’t
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C
情态动词的用法。根据标志可知为禁止浪费水的标志。表示禁止命令用must. 因此选C。
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He has poor _______, so he can’t see the words on the blackboard clearly.
A.smell
B.taste
C.hearing
D.eyesight
— Susan, would you like to go hiking with us this afternoon?
— I'd love to, but I
study for a test.
A. may B. have to C. can
—______ did you sleep last night?
—Only five hours. I stayed up late to do my homework.
A.How soon
B.How often
C.How long
D.How much
—Oil is everywhere in this store, so you
know smoking is forbidden here.
—I’m sorry.
A. can B. may C. must
People who drink wine ______ to drive after May Day.
A.don’t allow
B.isn’t allowed
C.mustn’t allow
D.mustn’t be allowed
Her sister ____ a taxi driver. Now she works for a charity.
A.is
B.were used to being
C.is used to being
D.used to be
--Whose backpack is this?
---It
be Jim’s. Look, his student’s card is in it.
A.must
B.can
C.mustn’t
D.can’t
In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can help the blinds, search for the bad eggs,...
A.bad for
B.used to
C.used for
D.good at
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